Elements of Korean written
language. Korean
alphabet.
Japanese basic-Kanji character set
A subset
of Japanese DBCS, consisting of commonly used Kanji characters. There
are 3226 Kanji characters in this
set.
Japanese dictionary
See DBCS
conversion dictionary.
Japanese double-byte character set
An
IBM-defined double-byte character set for Japanese, consisting of the Japanese
non-Kanji set, basic Kanji set, extended Kanji set, and up to 4370
user-definable characters.
Japanese extended-Kanji character set
A subset
of Japanese DBCS, consisting of less commonly used Kanji characters.
There are 3487 characters in this
set.
Japanese non-Kanji character set
A subset
of Japanese DBCS, consisting of non-Kanji characters like Greek, Russian,
Roman numeric, alphanumeric and related symbols, Katakana, Hiragana, and
special symbols. There are 550 characters in this
set.
JAR file (.jar file)
In Java, abbreviation
for Java ARchive. A file format that is used for aggregating many files
into one.
Java
An object-oriented
programming language for portable interpretive code that supports interaction
among remote objects. Java was developed and specified by Sun
Microsystems, Incorporated.
JavaBeans
In Java, a portable,
platform-independent reusable component
model.
Java Database Connectivity (JDBC)
An industry
standard for database-independent connectivity between Java and a wide range
of databases. The JDBC provides a call-level application programming
interface (API) for SQL-based database
access.
Java Developer Connection (JDC)
A service that is
designed for individual developers. JDC provides online training,
product discounts, feature articles, error information, and early access
capabilities.
Java Development Kit (JDK)
Software that
Sun Microsystems distributes for Java developers. This software
includes the Java interpreter, Java classes, and Java development
tools. The development tools include a compiler, debugger,
dissassembler, AppletViewer, stub file generator, and documentation
generator.
Java garbage collection
A process
that frees the programmer from having to write code to deallocate memory that
is no longer in use by the program.
Java interpreter
A part of the
Java virtual machine that interprets Java class files for a particular
hardware platform.
Java Native Interface (JNI)
A
programming interface that allows Java code that runs inside of a Java virtual
machine to interoperate with functions that are written in other programming
languages.
Java Remote Method Invocation (RMI)
A distributed object
model for Java-to-Java applications, in which the methods of remote Java
objects can be called from other Java virtual machines, possibly on different
hosts.
Java Runtime Environment (JRE)
A subset of the Java
Development Kit (JDK) for end users and developers who want to redistribute
the JRE. The JRE consists of the Java virtual machine, the Java Core
Classes, and supporting files.
JavaScript
An interpreted
programming or scripting language.
Java ServerPages (JSP)
Pertaining to the
Sun Microsystems, Inc., technology that allows dynamic content to be
inserted into an HTML page before the HTTP server sends the page back to the
browser for display. These pages have a .jsp extension that
signals the HTTP process to call the WebSphere Application Server to handle
the imbedded Java code (known as a scriptlet) or to refer to a
JavaBean.
Java transformer
Software that
converts Java bytecode to 64-bit reduced instruction set computer (RISC)
machine instructions.
Java virtual machine
The part of
the Java Runtime Environment (JRE) that is responsible for interpreting Java
bytecodes.
Java 2 Software Development Kit (J2SDK), Standard Edition
A product of Sun
Microsystems, Inc. that implements the Java 2 Platform, Standard
Edition, version 1.2. It is a software development kit that you
can use to build applications for the Java 2 Platform, Standard Edition,
version 1.2. It includes both the Java 2 development
environment, Standard Edition, version 1.2 and Java 2 Runtime
Environment, Standard Edition, version 1.2.
JCT
See journal control
table (JCT).
JDBC
See Java Database
Connectivity (JDBC).
JDC
See Java Developer
Connection (JDC).
JDK
See Java Development Kit
(JDK).
JES
See Job Entry
Subsystem.
JID
See journal identifier
(JID).
JNI
See Java Native
Interface (JNI).
job
(1) A
unit of work separately run by a computer. Also called a
process.
(2) A unit of work on the AS/400
system. Jobs run in subsystems and use system resources, such as
memory, disk, and processor cycles, to perform their tasks. Jobs can be
allocated priorities and can run either interactively or in batch.
(3) In the Integrated Language
Environment (ILE) model, a collection of resources and data that consists of
one or more activation groups. See also activation
group.
(4) In the OfficeVision calendar
function, an item that schedules a control language (CL) command to run at any
date and time.
job accounting
A system function
that collects information about a job's use of system resources and
records that information in a journal.
job action
The network attribute
that controls the handling of a job submitted from remote locations through
either the SNADS network or RSCS.
job classification
In
performance, the process of identifying how jobs that are running on the
system are grouped into workloads. Files created during this process
can be used again to analyze data from different
intervals.
job control authority
A special
authority that allows a user to: change, delete, display, hold, and
release all files on output queues; hold, release, and clear job queues
and output queues; start writers to output queues; hold, release,
change, and end other users' jobs; change the class attributes of a
job; end subsystems; and start (do an IPL of) the system. See
also all object authority, save system authority,
security administrator authority, service authority,
spool control authority, system configuration authority,
and user class.
job date
The date associated with
a job. The job date usually assumes the system date, but it can be
changed by the user. See also creation date and system
date.
job description
A system object
that defines how a job is to be processed. The system-recognized
identifier for the object type is
*JOBD.
Job Entry Subsystem
A
System/370-type licensed program that receives jobs into the system and
processes all output data produced by the jobs.
job log
A record of requests
submitted to the system by a job, the messages related to the requests, and
the actions performed by the system on the job. The job log is
maintained by the system program.
job message queue
A message queue
that is created for each job. A job message queue receives requests to
be processed (such as commands) and sends messages that result from processing
the requests. A job message queue consists of an external message queue
and a set of program message queues. See also external message
queue and program message
queue.
job name
The name of the job as
identified to the system. For an interactive job, the job is assigned
the name of the work station at which the job was started; for a batch
job, the name is specified in the command used to submit the job.
Contrast with qualified job name.
job queue
An object that contains
a list of batch jobs waiting to be processed by the system. The
system-recognized identifier for the object type is
*JOBQ.
job schedule
An object that
contains entries for jobs to be submitted at a specified time and date.
These job schedule entries can also be used to schedule recurring jobs.
The system-recognized identifier for the object type is
*JOBSCD.
job schedule entry
An entry in
the job schedule object that describes the job to be submitted. The
user can specify attributes of the job and when the job will be
submitted.
job schedule function
A function
of the operating system that allows time-dependent scheduling for batch
jobs.
job scheduler
The IBM licensed
program that is a job scheduling system designed to allow unattended
operations, to automate operator functions, and to control report
distribution.
join
(1) An operation that combines
data from two or more files using specified fields.
(2) In DB2 UDB for AS/400, a relational
operation that allows the program to retrieve data from two or more tables
based on matching column values.
(3) To become a new member of an entity
such as a cluster.
join field
A comparison field
that identifies records from two files to be combined into one
record.
join level specifications
For a
join logical file, data description specifications coded between the record
and field level that define how to join two physical files. See also
file level specifications, field level specifications,
key field level specifications, help level
specifications, record level specifications, and
select/omit level
specifications.
join logical file
A logical file
that combines (in one record format) fields from two or more physical
files. See also logical file.
join test
A condition that
determines how files and record formats are joined for use in a
query.
journal
A system object that
identifies the objects being journaled, the current journal receiver, and all
the journal receivers on the system for the journal. The
system-recognized identifier for the object type is *JRN. See also
journal receiver.
journal code
A 1-character code
in a journal entry that identifies the category of the journal entry.
For example, F identifies an operation on a file; R identifies an
operation on a record, and so forth. See also journal
entry.
journal control
The ability for
the CICS user to write CICS journal records when required by the application
for auditing purposes.
journal control table (JCT)
A table
that contains a description of the CICS user journals along with their access
characteristics.
journal entry
A record in a
journal receiver that contains information about a journaled change or other
activity that is journaled. See also journal code and
journal entry type.
journal entry type
A 2-character
field in a journal entry that identifies the type of operation of a
system-generated journal entry or the type of journal entry of a
user-generated journal entry; for example, PT is the entry type for a
write operation. See also journal
code.
journal identifier (JID)
A unique
identifier that is assigned to a particular object when journaling is started
for that object. Journal entries are associated with a particular
object by this JID value.
journaling
The process of
recording, in a journal, the changes made to objects, such as physical file
members or access paths, or the depositing of journal entries by system or
user functions.
journal receiver
A system object
that contains journal entries added when events occur that are journaled, such
as changes to a database file, changes to other journaled objects, or
security-relevant events. The object type is *JRNRCV. See also
journal.
JRE
See Java Runtime
Environment (JRE).
JSP
See Java ServerPages
(JSP).
Julian date
A date format that
contains the year in positions 1 and 2, and the day in positions 3 through
5. The day is represented as 1 through 366, right-adjusted, with zeros
in the unused high-order positions. For example, the Julian date for
April 6, 1987 is 87096.
jumper
A small piece of
plastic-covered metal that is used to connect two contacts and complete a
circuit.
junction
In the Distributed
Computing Environment (DCE), a specialized entry in the DCE namespace that
contains binding information to enable communications between different DCE
services.
justify
To adjust text so that
line endings are even. See left-justify and
right-justify.
Just-In-Time (JIT) compiler
In Java, a specific
compiler that converts Java bytecodes into specific code at run time for
better performance.